Fixed crc32_combine_gen declaration warning in zlib-ng API.

[nmoinvaz]

See #1077.

[codecov]

Codecov Report

Merging #1080 (b19c7d1) into develop (70f608c) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop    #1080      +/-   ##
===========================================
- Coverage    81.50%   81.47%   -0.03%     
===========================================
  Files           87       87              
  Lines         8845     8847       +2     
  Branches      1427     1425       -2     
===========================================
- Hits          7209     7208       -1     
- Misses        1079     1081       +2     
- Partials       557      558       +1     

Flag	Coverage Δ
macos_clang	69.49% <100.00%> (ø)
macos_gcc	68.02% <100.00%> (ø)
ubuntu_clang	74.26% <100.00%> (ø)
ubuntu_clang_debug	74.42% <100.00%> (ø)
ubuntu_clang_inflate_allow_invalid_dist	74.12% <100.00%> (ø)
ubuntu_clang_inflate_strict	74.17% <100.00%> (ø)
ubuntu_clang_mmap	74.23% <100.00%> (ø)
ubuntu_clang_msan	74.26% <100.00%> (ø)
ubuntu_clang_pigz	35.07% <ø> (ø)
ubuntu_clang_pigz_no_optim	39.57% <ø> (ø)
ubuntu_clang_pigz_no_threads	34.59% <ø> (ø)
ubuntu_clang_reduced_mem	74.40% <100.00%> (ø)
ubuntu_gcc	73.66% <100.00%> (ø)
ubuntu_gcc_aarch64	75.53% <100.00%> (ø)
ubuntu_gcc_aarch64_compat_no_opt	73.23% <100.00%> (ø)
ubuntu_gcc_aarch64_no_acle	74.98% <100.00%> (ø)
ubuntu_gcc_aarch64_no_neon	75.10% <100.00%> (ø)
ubuntu_gcc_armhf	75.52% <100.00%> (ø)
ubuntu_gcc_armhf_compat_no_opt	73.19% <100.00%> (ø)
ubuntu_gcc_armhf_no_acle	75.78% <100.00%> (ø)
ubuntu_gcc_armhf_no_neon	75.87% <100.00%> (ø)
ubuntu_gcc_armsf	75.53% <100.00%> (ø)
ubuntu_gcc_armsf_compat_no_opt	73.19% <100.00%> (ø)
ubuntu_gcc_compat_no_opt	74.18% <100.00%> (ø)
ubuntu_gcc_compat_sprefix	73.56% <100.00%> (ø)
ubuntu_gcc_mingw_i686	0.00% <0.00%> (ø)
ubuntu_gcc_mingw_x86_64	0.00% <0.00%> (ø)
ubuntu_gcc_no_avx2	75.71% <100.00%> (ø)
ubuntu_gcc_no_ctz	76.22% <100.00%> (ø)
ubuntu_gcc_no_ctzll	75.90% <100.00%> (ø)
ubuntu_gcc_no_pclmulqdq	72.34% <100.00%> (ø)
ubuntu_gcc_no_sse2	74.74% <100.00%> (ø)
ubuntu_gcc_no_sse4	72.67% <100.00%> (ø)
ubuntu_gcc_o3	72.88% <100.00%> (ø)
ubuntu_gcc_osb	75.92% <100.00%> (ø)
ubuntu_gcc_pigz	35.26% <ø> (ø)
ubuntu_gcc_pigz_aarch64	37.04% <ø> (-0.07%)	⬇️
ubuntu_gcc_ppc	73.25% <100.00%> (ø)
ubuntu_gcc_ppc64	76.66% <100.00%> (ø)
ubuntu_gcc_ppc64le	75.14% <100.00%> (ø)
ubuntu_gcc_ppc_no_power8	75.94% <100.00%> (ø)
ubuntu_gcc_s390x	78.03% <100.00%> (-0.03%)	⬇️
ubuntu_gcc_sparc64	77.20% <100.00%> (ø)
ubuntu_gcc_sprefix	73.35% <100.00%> (ø)
win64_gcc	∅ <ø> (∅)
win64_gcc_compat_no_opt	∅ <ø> (∅)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
crc32_comb.c	78.72% <100.00%> (-3.50%)	⬇️
trees.c	96.17% <0.00%> (-0.28%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 70f608c...b19c7d1. Read the comment docs.

[Dead2]

Passes my local testing without warnings, although I don't have any tests testing this function through the exported API.